Sanitary stringer attachment fob confection-machines



1. DI GIORGIO.

SANITARY STRINGER ATTACHMENT FOR CQNFECTION MACHINES. APPLICATION FILED FEB. 7, l9l9.

.1 306,2 1 6'. 1 v V Patented June 10, 1919.

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" JosErH IDI GIORGIO, or CAMBRIDGE, MASSACHUSETTS.

To all whom it may concern Be it known that I, JOSEPH DI GIORGIO, a subject of the King of Italy, residing at Cambridge, in the county of Middlesex and State of Massachusetts, haveainvented new and useful Improvements in Sanitary Stringer Attachments for Confection-Machines, of which the following is aspecification. 2 a

This invention is embodied in an attachment fora machine employed for manufacturing coated confections, the confections be ing usually cores or bodies coated externally with chocolate, or other material, applied in a liquid or semi-liquid form, the machine including pumping or forcing: means causing the liquid material :to flow through a suitable outlet or outlets. It is customary to use one machine for different operations attending the manufacture of coated confections, one ofthese operations being a step known as stringing, or applyingIto the otherwise completed coating of theconfection a string of the liquid material forced by the pumping .means of the machine through a flexible tube or hose having a string-forming nozzle, which is adapted to be moved in any desired direction by the operator to deposit on the V confection a string of theliquid material to ornament the coating of the confection.

fzThe invention has for its object, first, to

provide an attachment comprlsing a main conduit'adapted tobe detachably connected with an outlet through which theliquid material is forced by a pump forming a part of the machine, an outlet end to which is coupled a flexible tube or-hose having-a stringforming "nozzle, and an overflow conduit communicating with the main conduit between the intake and outlet ends of the latter, and provided with a spring-closed pressure-relieving valve, said overflow conduit and relief valve preventing variations of pressure on liquid or semi-liquid material conducted by the flexible tube, so that a string is delivered at a uniform speed by the string -.forming nozzle, this uniformity of speed being desirable because the operator is ,enabledtherebyto more effectively ornament the.confections. V v

The invention also has for its ob]ect to provide an attachment characterized as above stated, the main conduit having a plurality of outlet ends to wh1ch a corresponding number of flexible tubes are coupled,

. Specification of Letters Patent. 7 Patented June Application filed February 7,1919. Serial No. 275,655. i l

in, rare.

each controlled by a separate operator, means being provided for shutting off the flow through either tube and the overflow conduit being provided with a stop cook, the arrangement being such that when all the tubes are in operation, the overflow conduit may be closed, and when the flow through one or more of the tubesis shut off, the overflow conduit may be opened to relieve the pressure on liquid dischargedby the remaining tube or tubes.

Of'the accompanying drawings forming a part of this specificati0n,

Figure 1 is a top plan View of an attachment embodying the invention.

Fig. 2 is an edge view of the same.

Fig. 3 is a section on line 8-3 of Fig. 1.

Fig. 4 is a section on line 44 of Fig. 1.

The same reference characters indicate the same parts in all of the figures.

I have shown at 12 in Figs. 1 and 2 the outlet end of a discharge pipe leading from a gear pump forming an element of a well known confection machine, the pump being adapted to force a liquid or semi liquid string-forming material through the discharge outlet 12. It is not necessary to illustrate and describe the confection machine in detail, machines of this character being well known, and my invention residing only in the. improved attachment hereinafter described. s 1

My improved attachment is adapted to be connected as awhole with and supported by the outlet end 12, and includes a main conduit having an intake end 13 provided with coupling means such as a screw thread adapted, fordetachable connection with the discharge outlet 12, said intake end as here shown being externally screw-threaded and adapted to be engaged with an internal thread in the machine outlet 12.

As shown in the drawings, the portion of the main conduit having the intake end 13is a pipe length 14 connected with a crossshaped conduit. member 15, which in turn is connected by a short pipe length 17 with a T-shaped conduit member 18. The member 18 is in turn connected by a short pipe length 19 with a coupling member 20, to

which is detachably secured a complemental coupling member 21 detachably engaged with an inner terminal member 22 secured to a flexible tube or hose 23. While the tube 23 may be made of rubber tubing, I prefer to make it of a well'known flexible steel tubing.

two branches, each including one of the arms of the cross shaped member 15, a shut off cock casing 25, a short tube length 26, an elbow 27, and a short tube length 28 engaged with a coupling member 20, such as that above described, forming a part of a detachable connection between the branch and another flexible tube 23. The rotary plug members 29 in the cock casings 25 may be turned to shut off said branches so that liquid will flow only through the flexible tube 23 connected with the central conduit member 19.

The T-shaped conduit member 18 is con- 'nected by a short pipe length 30 with an el+ bow 31 with which is connected a pipe length 32. The parts or members 30, 31 and 32 constitute portions of an overflow conduit which includes a shut-off cock casing 33 and aterminal pipe length 34, the outlet end of which is normally closed bya spring-pressed pressure-relieving valve 35. Said outlet end is preferably beveled, as shown by Fig. 3, and the valve 35 is preferably a resilient metal strip attached at 36 to the conduit member 34 and yieldingly closed by ,a spring 37 interposed between the valve 35 and the head of a screw-threaded stud 38 engaged with the member 34.

It will be seen that when the plug mem bers 29 of the branch shut-off cocks are closed, the-,material forced into the conduit member 14 is under greater pressure than when the branch shut-01f cocks are open. When this condition prevails the plug member 29 of the overflow conduit shutoff cock is opened, so that a part of the material is permitted to escape through the overflow conduit, from which it may flow to a tank, or other receptacle, connected with the pump of the machine.- Provision is therefore made for preventing an excessively rapid delivery of the material when only one of the tubes 23 is in operation. When each of the tubes 23 is in operation the shut-off cock in the overflow conduit may be closed, in case it is found that there is no excess pressure requiring relief.

The inventlon may be embodied in an attachment such as wouldbe provided by eliminating the branches ofthe main conduit, the attachment including a single flexible pipe 23 and the described overflow conduit and its relief valve. The branched conduit and the plurality of flexible tubes 23 illustrated are obviously desirable, be-

cause they enable several-operators to work with the same attachment, the overflow conduit and its relief valve being useful whenever the operation of one or more of th branch conduits is discontinued.

, While I have described somewhat detail the multiplicity of parts or members entering into the construction of the attachment as illustrated, i; do not limit myself to articles-to be ornamented by stringing. are

deposited, and by which they are; moved.

horizontally. The-flexible tubes 23: depend from the fixed members to which they are coupled, and are manipulated by operators stationed adjacent to the carrier, the fixed portions of the attachment being out.of.the

way of the heads of the operators- -a Any suitable means may be provided for supporting theconduit so that the member 14 will not be turnedain thevoutlet portion 12, by theweight of either of the branches." I claim:

machine, comprising a main conduit adapted at its intake endfor connection with adischarge outlet of the machine, an overflow conduit communicating withthe main conduit between the intake andoutlet' ends of the latter, and provided with a yieldinglyclosed pressure-relieving valvepand a 'flex1 ble manually controlled stringing tube c011 pled to the outlet end of: the main conduit,

one end of the tubebeing free andprovided with a string-forming nozzle, said overflow H '90 l. A stringerattachment foracon-fection conduit and relief valve preventing an excess of pressure on liquid or sem1-11quid material conducted by the tube, so'thata string is deliveredat a uniform speed by the nozzle.

2. A stringer attachment substantially rasspecifled. by claim 1, thesaid 'overflowlconduit being provided with ashut ofl' cock.

3. A stringer attachment foraconfection machine, comprising a branched main con duit having a single intakeend provided with coupling means adapted for connection with a discharge outlet of the machine, and a plurality of outlet ends, all communieating with'the single intake end, and=fiexible tubes coupled to the outlet ends of the main conduit" and provided with stringformingnozzlesr i 4; A stringer attachment for a confection machine, comprising a main conduit, having a single intake endprovided with coupling 7 means adapted for connection with a; discharge outlet of the machine, main conduit branches having shut-off cocks, the branche d' conduit thus formed having a single} intake end and a plurality of outlet ends, all communicating with the single intake end,and independent flexible tubes coupled .to the said outlet ends, and provided at their free relieving valve and flexible tubes coupled to 15 the said outlet ends and provided with string-forming nozzles, the overflow conduit and each of the main conduit branches being provided with shut-oft" cocks, so that the overflow conduit may be closed when the 20 main conduit and its branches are open, and opened when the main conduit branches are closed to compensate for increase of pressure due to the closing of said branches.

In testimony whereof I have aflixed my 25 signature.

JOSEPH DI GIORGIO.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. a 

